Process for corrugating cardboard.



H. G. RBINSTEIN. PROCESS FOR GORRUGATING CARDBOARD.

APPLICATION FILED JAN.27, 1911.

1,016,093, A Patented Jan.30,1912.

UNITED STATES ATENT OFFICE. I

HANS Gfi'NTI-IER- REINSTEIN, 0F HANOVER, GERMANY.

PROCESS FOR CORRUGAT'ING CARDBOARD.

Specification of Letters Patent.

Patented J an". 30, 1912.

Application filed January 27, 1911. SerialNo. 605,126.

To all whom it may oonoem:

Be it known that I, HANS GfiNTHER REIN- STEIN, a subject of the GermanEmperor, and resident of Hanover, Germany, have invented a certain newand useful Process oil it is pressed and heated by means of hotcorrugated rollers so that the oil contained in the card board becomesthick and hardens so as to form varnish.

Owing to the fact that the oil impregnating the card board hardens andforms varnish, the corrugations formed in the card board becomepermanent- The card board treated according to the present process notonly becomes adapted to resist moisture but also adapted tobe employedas a resisting bgildingmaterial especially suitable for manufacturingpieces of furniture.

tween them retains the To illustrate the process, I have illustrateddiagrammatically in the accompanymg drawing a cross section of a rollingmill.

In the drawing a and b designate the rollers of a rolling mill thesurfaces of which are provided with longitudinal ribs cwhich alternatewith depressions d. The ribs and depressions of the two rollers a and bare similar so that the ribs of one roller are adapted to engage thedepressions of the other roller and inversely. The rollers areheated, sothat the card board 6 passed bethe corrugations.

Having now fully described'my said invention, what I claim and desiretosecure by LettersPatent, is:

profile produced by A process for preparing card board consisting 1nimpregnatlng thecard board with oiland corrug'ating it by means of hotrollers, so that the oil hardens durin it's passage between the rollersand consolidates the corrugations of the card board, substantially asand for the purpose set f0 In testimony whereof I have hereunto set myhand in presence of two witnesses.

H Ns tIN'rHER REINSTEIN.

Witnesses: 1 Y MARTA L. 'THOMPSQI Ti anium IwsEN.

